import java.io.IOException;
import java.io.Writer;

/**
 * Simple representation of a product
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Product
{
    private final int productNo;
    private TaxCategory taxCategory;
    private String name;
    private double priceExTax;
    
    private static int nextProductNo = 0;
    
    public Product(String name, double priceExTax, TaxCategory taxCategory) {
        productNo = nextProductNo++;
        this.name = name;
        this.priceExTax = priceExTax;
        this.taxCategory = taxCategory;
        
        if (taxCategory == null) throw new IllegalArgumentException("Notnull!!!!!");
    }
    
    public int getProductNo() {
        return productNo;
    }
    
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }

    public double getPriceExTax() {
        return priceExTax;
    }
    
    public void setPriceExTax(double priceExTax) {
        this.priceExTax = priceExTax;
    }
    
    public double getPriceWithTax() {
            return taxCategory.getTaxFactor() * priceExTax;
        
    }
    
    public void printCatalogEntry(Writer out) throws IOException {
        out.write(productNo+"\t"+name+"\t"+getPriceWithTax());
    }
}